Heel



FIG. 1 is a front, right perspective view of a heel showing my new design;

FIG. 2 is front, left perspective view thereof;

FIG. 3 is right elevation view thereof;

FIG. 4 is left elevation view thereof;

FIG. 5 is rear elevation view thereof; and,

FIG. 6 is bottom plan view thereof.

The light grey portion of the shoe shown in broken lines attached to the heel is environment that forms no part of the claimed design. 

CLAIM The ornamental design for a heel, as shown and described. 